Two integrator RC oscillator

Thread Starter

tonn

Joined Nov 21, 2010
3
Hy!

I have a RC oscillator circuit with two integrators and one inverter. I do not understand how in the output can be sinus signal, when the circuit input has a DC signal. Why that circuit begins generate a sinus signal? What is here different than the Wien`i bridge RC generator?

The other question is understanding with that line:
Differentiating a square wave results in narrow pulses coinciding with the input transitions when the RC time constant is much smaller than the input pulse width.

English is not my mother-tongue so I have a little problem to understand with that line.
 
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